Want a faster website, shorter load times and better SEO? Then Brotli compression is the technique you need to know! In this complete guide you'll discover what Brotli is, why it beats GZIP and how to enable it on your server or CDN.

🎯 The result? Up to 90% better compression and a lightning-fast website!

📌 What is Brotli compression?

Brotli is an advanced compression technique developed by Google. It makes your website files smaller and faster, so pages load up to 40% faster.

🔹 How does Brotli work?
Brotli uses smart algorithms to shrink text files such as HTML, CSS and JavaScript. It compresses more efficiently than GZIP, so your website uses less bandwidth and loads faster.

🔹 How is it different from GZIP?
Brotli is a new generation of compression, specially optimized for modern websites and CDNs.

✅ Benefits of Brotli compression

✔ Smaller files (up to 90% compression) 📉
✔ Faster load times 🚀
✔ Lower bandwidth usage 💾
✔ Better SEO & Google rankings 🔝
✔ Perfect for CDNs such as Cloudflare ☁

🔧 How do you enable Brotli? (Step-by-step guide)

Depending on your server or CDN, you enable Brotli compression through Apache, Nginx, IIS, Cloudflare or WordPress.

🌟 1. Enabling Brotli on Apache

Using an Apache server? Add these lines to your .htaccess file:

<IfModule mod_brotli.c> AddOutputFilterByType BROTLI_COMPRESS text/html text/plain text/xml text/css text/javascript application/javascript application/json </IfModule>

🔹 Test your settings and restart Apache (not needed on shared hosting):

sudo systemctl restart apache2

⚡ 2. Enabling Brotli on Nginx

On Nginx, add the following lines to your configuration file (nginx.conf or default.conf):

brotli on; brotli_types text/plain text/css application/json application/javascript text/xml application/xml; brotli_comp_level 6;

Then restart Nginx (not needed on shared hosting):

sudo systemctl restart nginx

🖥 3. Enabling Brotli on IIS (Windows Server)

For Windows Servers:

  1. Open IIS Manager.
  2. Install the Brotli IIS extension via Microsoft's IIS Compression Module.
  3. Go to Sites > Your website > Compression.
  4. Check Enable Brotli Compression.
  5. Restart IIS.

☁ 4. Enabling Brotli through Cloudflare & CDNs

Using a CDN such as Cloudflare? Good news: Cloudflare supports Brotli by default!

  1. Log in to Cloudflare.
  2. Go to the Speed tab.
  3. Turn on Brotli compression.

For Amazon CloudFront and other CDNs, check in the settings whether Brotli is supported.

🔥 5. Enabling Brotli on WordPress & other CMSs

Use a WordPress caching plugin such as:
✅ WP Rocket (best choice)
✅ W3 Total Cache
✅ LiteSpeed Cache

In the settings, go to Brotli compression and activate it with one click!

🔍 How do you check whether Brotli works?

Check whether Brotli is activated correctly with these tools:

✔ GTmetrix: checks your compression.
✔ Google PageSpeed Insights: measures the speed of your site.
✔ cURL in the terminal:

curl -I -H 'Accept-Encoding: br' https://yourwebsite.com

See Content-Encoding: br? Then it works!

🆚 Brotli vs GZIP: which is better?

Brotli is the next-gen version of GZIP and offers better compression. But is it always better?

Feature GZIP Brotli
Compression Good 20-30% better
Speed Faster at compression Faster at decompression
Browser support All browsers Chrome, Firefox, Edge, Safari
Recommended for Standard servers CDNs & high-performance sites

Conclusion: Use Brotli if you use Cloudflare; otherwise GZIP is a fine choice.

❌ Common mistakes & best practices

✅ Best practices

✔ Use Brotli on HTML, CSS, JS (but NOT on images).
✔ Combine it with caching for even better performance.
✔ Check that mod_brotli is active on Apache or Nginx.
✔ Use a fallback to GZIP for old browsers.

❌ Common mistakes

🚫 Activating Brotli but not testing it → Always check with GTmetrix or cURL!
🚫 Enabling Brotli without restarting the server → Always reboot your server after changes!
🚫 Thinking Brotli replaces GZIP → Not all browsers support Brotli, so make sure you have a fallback!

🎯 Brotli at a glance

Brotli compression is the best choice for fast websites in 2025.

✔ Activate Brotli on your server or through Cloudflare
✔ Test whether Brotli works with GTmetrix or cURL
✔ Use GZIP as a fallback for maximum compatibility
✔ Check your settings & avoid mistakes

🔥 Want an ultra-fast website without the hassle? Theory7 turns on Brotli compression by default!

🚀 Brotli enabled by default at Theory7!

With Theory7 Web Hosting, we enable Brotli compression by default on our servers and CDN integrations. This means your website is automatically faster and more efficient, without you having to set anything up yourself. Whether you have a WordPress site, online store or business website, we make sure your site loads lightning fast.

🔥 Choose Theory7 Web Hosting and experience the difference! 🚀

📢 Frequently asked questions (FAQ)

❓ Is Brotli better than GZIP?

Yes! Brotli compresses 20-30% more efficiently than GZIP, so your site loads even faster.

❓ Should I use Brotli and GZIP together?

No, but do make sure you have a GZIP fallback for old browsers.

❓ How much faster will my website be with Brotli?

Up to 40% faster load times and 90% smaller files!

👉 Check out Theory7 Web Hosting here 🚀

Further reading